CN2914070Y - Skid device for measuring coefficient of static friction - Google Patents
Skid device for measuring coefficient of static friction Download PDFInfo
- Publication number
- CN2914070Y CN2914070Y CN 200620096732 CN200620096732U CN2914070Y CN 2914070 Y CN2914070 Y CN 2914070Y CN 200620096732 CN200620096732 CN 200620096732 CN 200620096732 U CN200620096732 U CN 200620096732U CN 2914070 Y CN2914070 Y CN 2914070Y
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- CN
- China
- Prior art keywords
- chuck
- sliding friction
- clamp
- utility
- friction coefficient
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model discloses a sliding chuck device for measuring static sliding friction coefficient, which is composed of a chuck plate, a chuck seat and two movable wheelbarrows. The chuck plate is equipped with a chuck slot, a threaded sleeve, a dividing ruler, an adjustable screw nut and a screw rod. The screw rod is positioned in the chuck slot, with one end connected with the adjustable screw nut on the outer end of the chuck plate. The threaded sleeve is embedded on the other end of the chuck plate lengthwise. The top part of the chuck seat is connected with the threaded sleeve. Two movable wheelbarrows are equipped over the chuck slot. The outside thread on the outer side wall of the screw rod is connected and coordinated with the inside thread of the chuck clot on the chuck plate. The chuck seat is composed of two cylinders with the same material and different diameters in connection. And the diameter of the upper cylinder is less than the diameter of the lower cylinder. The utility model has the advantages of simple structure, practicality, low cost and high precision. The utility model could be used in the friction coefficient measure of all kinds of engine gap taps and the static sliding friction coefficient measure of all kinds of middle and small-sized parts in teaching experiment, as well as all kinds of static sliding friction coefficient measure in everyday life.
Description
Technical field
The utility model relates to a kind of device of measuring friction factor, relates in particular to a kind of sliding device of card of measuring the quiet coefficient of sliding friction.
Background technology
Coefficient of static friction is a kind of factor of direct influence, and the as easy as rolling off a log external force that makes of its change is unbalance, causes industrial accident to take place, so the accurate mensuration of coefficient of static friction, seems of crucial importance.
Summary of the invention
The purpose of this utility model is: remedy the deficiency of prior art, provide a kind of card simple in structure, practical, cost is low, degree of accuracy the is high quiet coefficient of sliding friction of mensuration sliding device.
The utility model is realized by following scheme: be made of clamp, deck, 2 moveable carriages, draw-in groove, screw shell, rule, adjustable nut, screw mandrel are set on the clamp.Screw mandrel is arranged in the draw-in groove, one end is connected with the adjustable nut that is arranged at the clamp outer end, screw shell vertically is embedded in the clamp other end, the deck top is connected with screw shell, two moveable carriages are positioned on directly over the draw-in groove, and the internal thread that the screw mandrel lateral wall is provided with the draw-in groove on external thread and the clamp is connected cooperation.
Two cylinders that deck described in the utility model is not waited by same material, diameter engage and form
The utility model deck top cylinder diameter is less than bottom drum diameter.
The utility model is simple in structure, practical, cost is low, degree of accuracy is high, can utilize the Determination of Friction Coefficient on all types of engine valves, and in the education experiment various middle-size and small-size: the measurement of the quiet coefficient of sliding friction also is useful on the measurement of the various quiet coefficients of sliding friction in the life.
Description of drawings
Fig. 1 is the utility model example structure synoptic diagram;
Fig. 2 is the utility model clamp structural representation.
Embodiment
Below in conjunction with accompanying drawing the utility model is elaborated.
The utility model is made of clamp 1,2,2 moveable carriages 5 of deck.Draw-in groove 4, screw shell 6, rule 7, adjustable nut 3, screw mandrel 8 are set on the clamp 1, screw mandrel 8 is arranged in the draw-in groove 4, one end is connected with the adjustable nut 3 that is arranged at clamp 1 outer end, screw shell 6 vertically is embedded in clamp 1 other end, deck 2 tops are connected with screw shell 6, two moveable carriages 5 are positioned on directly over the draw-in groove 4, and screw mandrel 8 lateral walls are provided with external thread and are connected cooperation with draw-in groove 4 internal threads on the clamp 1.Two cylinders that deck 2 is not waited by same material, diameter engage and form, and the top cylinder diameter is less than bottom drum diameter.The effect of adjustable nut 3 can change the position of travelling car 5, to determine the centre of gravity place a under the clamp gravity.Deck 2 tops are connected with screw shell 6, and two moveable carriages 5 are installed in directly over the draw-in groove 4, and the zero graduation of rule is contained on the focus point of clamp, to measure dolly displacement L.Two moveable carriages 5 have connected two thing pieces by silk thread, and two moveable carriages just are positioned on directly over the draw-in groove 4, and silk thread then passes draw-in groove slit unsettled hang-up thing piece.
It is as follows to utilize the utility model to measure the step of the quiet coefficient of sliding friction:
1, on surface level, installs being connected of clamp and deck; 2, two dollies are placed on do the reference position in the draw-in groove, reading of data on rule, and measure the quiet coefficient of sliding friction; 3, regulate adjustable nut, change the distance that travelling car becomes with the deck center, reading of data on rule.And calculating friction factor; 4, thresh above step, can find the variation of a value, its coefficient of sliding friction also can change, and the change of a value is that the quiet coefficient of sliding friction is inversely proportional to as can be known; 5, change the weight of playing the thing piece on dolly, the distance of a is constant, adds and subtracts external pressure repeatedly.Found that the quiet coefficient of sliding friction and pressure independent.Measurement result shows: the quiet coefficient of sliding friction is relevant with material character, the degree of roughness of contact area, the temperature of contact object.Suppose that clamp thickness is b, then can calculate and record the quiet coefficient of sliding friction according to dolly displacement L, centre of gravity place a and thickness b.
In same material, under the coarse situation of contact area of the same race, as long as can change the center line distance that finds the survey instrument clamp at the bearing center from the thickness that reaches clamp, quiet sliding friction force coefficient will change thereupon.But the quiet coefficient of sliding friction can not be subjected to the influence of external pressure and change size.
Claims (3)
1, a kind of sliding device of card of measuring the quiet coefficient of sliding friction, it is characterized in that: by clamp (1), deck (2), 2 moveable carriages (5) constitute, draw-in groove (4) is set on the clamp (1), screw shell (6), rule (7), adjustable nut (3) and screw mandrel (8), screw mandrel (8) is arranged in the draw-in groove (4), one end is connected with the adjustable nut (3) that is arranged at clamp (1) outer end, the internal thread that screw mandrel (8) lateral wall is provided with the draw-in groove (4) on external thread and the clamp (1) is connected cooperation, screw shell (6) vertically is embedded in clamp (1) other end, deck (2) top is connected with screw shell (6), and two moveable carriages (5) are positioned on directly over the draw-in groove (4).
2, the sliding device of the card of the quiet coefficient of sliding friction of mensuration according to claim 1, it is characterized in that: two cylinders that deck (2) is not waited by same material, diameter engage and form.
3, the sliding device of the card of the quiet coefficient of sliding friction of mensuration according to claim 2, it is characterized in that: deck (2) top cylinder diameter is less than bottom drum diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620096732 CN2914070Y (en) | 2006-05-19 | 2006-05-19 | Skid device for measuring coefficient of static friction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620096732 CN2914070Y (en) | 2006-05-19 | 2006-05-19 | Skid device for measuring coefficient of static friction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2914070Y true CN2914070Y (en) | 2007-06-20 |
Family
ID=38168671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620096732 Expired - Fee Related CN2914070Y (en) | 2006-05-19 | 2006-05-19 | Skid device for measuring coefficient of static friction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2914070Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042953A (en) * | 2010-11-09 | 2011-05-04 | 浙江大学 | Mechanical building ground anti-skidding performance tester |
-
2006
- 2006-05-19 CN CN 200620096732 patent/CN2914070Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042953A (en) * | 2010-11-09 | 2011-05-04 | 浙江大学 | Mechanical building ground anti-skidding performance tester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |